Hilon r



(No Model.)

' No. 428,048. Patented May 13, 1890.

UNITED STATES PATENT OFFICE.

HILON R. HORTON, OF ST. LOUIS, MISSOURI, ASSIGNOR OF ONE-HALF TO MIL- TON F. WVILLIAMS, OF SAME PLACE.

FRICTION-CLUTCH PU LLEY.

SPECIFICATION forming part of Letters Patent No. 428,048, dated May 13, 1890.

Application filed December 16 1889. Serial No. 333,977. (No model.)

To all whom it may concern: arm H and the block I, which is movable upon Be it known that I, HILON R. HORTON, of said arm H. The combination of the parts St. Louis, Missouri, have made a new and use- E F G forms in effect a toggle capable of a ful Improvement in Friction-Clutch Pulleys, movement indicated by the two positions of of which the following is a full, clear, and the parts shown, respectively, in the full and exact description. the broken lines, Fig. 1.

The improvement relates to that class of The arms H and K are both, and by means friction-clutch pulleys in which the pulley is of the hubs h and 7e, respectively, fitted to the .provided with a side flange upon which the shaft A. The arm I-Lby means of the key h 10 clutch mechanism exerts a grip'in effecting (which may extend beyond the sleeve D, as an engagement with the pulley; and it conshown) and groove 7L2, is prevented from rosists in the special means whereby the entating upon the shaft A, and the set-screw h gagement is effected, substantially as is hereis used to prevent the arm H from slipping inafter set forth and claimed, aided by the longitudinally upon the shaft. Alink L, at

I 5 annexed drawings, making part of this specione end jointed to the block I and at the fication in which other end to the arm K, unites those parts,

Figure 1 is an elevation of the improved and the two parts I L thus serve as a brace by construction, a portion of the pulley-rim being which the arms H K at the lower end thereof broken away; Fig. 2, a section on the line 2 (as viewed in Fig. 2) can be braced apart, as

20 2 of Fig. 1; Fig. 3, a view in perspective, shown in the full lines in Fig. 2, or drawn toshowing, separated from each other and reward each other, as indicated by the broken spectively in different positions, the two arms lines, same figure. The parts I L also, in conwhich are attached to the pulley-shaft and junction with the link G, form a device analused to tighten and loosen the band upon the ogous to that of a toggle. The arms H K 25 pulley side flange; Fig. 4, a View in perspecdo not cross each other upon the shaft A, and tive of the block which is applied to one of when their lower ends are moved apart, as the described arms and is movable longitudidescribed, their upper ends are closed tonally thereon; Fig. 5, a sectional view on ward each other, as shown in the full lines the line 5 5 of Fig. 1, showing the pulley-shaft in Fig. 2. The arm H does not, as stated,

0 and the parts immediately therewith conturn upon the shaft; but, owing to the nected; Fig. 6, a plan showing the ends of key and groove described, it turns with the the band and the plates used to connect them, shaft, and to provide for the described P6131". respectively, with the arms shown in Fig. 3; tive adjustment of the arms H K the arm K and Fig. 7, a bottom view of the middle porcan be turned on the shaft A. If desired, the

3 5 tion of the band and the part immediately arm K can be fixed on the shaft and the arm therewith connected. H be adapted to turn thereon. I

The same letters of reference denote the M represents a band encircling the pulley same parts. side flange O. The ends mm are respectively The shaft A, to which the improved mechattached to the upper ends of the arms H K in 40 anism is applied, the pulley B, and the pulsuch a manner that when those upper ends ley side flange O are of the customary form. are moved toward each other the band ends D represents a sleeve applied to'and adaptare drawn toward each other, and the bands ed to be slipped, with the aid of a suitable thereby tightened upon the flange O, and lever, (not shown,) upon the shaft A, as indiwhen they are opened apart from each other 45 cated by its two positions sl1own,respectively, the band is loosened upon the flange 0. The 5 in the full and the broken lines, Fig. 1. preferable means for thus connecting the E represents an L-shaped bar jointed at cl bands and the arms H. K is the plates N N. to the sleeve D and at f and g respectively Theseplates are attached to the arms H K, rejointed to the links F G. These links in turn spectively, and preferably by means of the 50 at f and 6, respectively, are jointed to the screws a a, and to the band ends, and prefer- IOC ably by means of the screws n a. The plates project laterally from the arms II K to come into line with the band upon the flange 0, so as to draw the band in the plane of the flange.

The plates N may be adjustable upon the arms H K, as indicated, by the slots m to enable the plates to be set toward each other as the band stretehesinuse. Any other method of adjustment may be used. The middle m of the band may be steadied in its position upon the flange O by means of an arm 0, one end of which is connected with the band and the other end with an arm K, substantially as shown. The flange C may be attached to or connected with the pulley by any suitable means so long as the pulley and flange rotate together. In a cut-off coupling the flange may be attached directly to the shaft Without the intervention or use of the pulley. The flange C is preferably a continuous one.

I claim-- 1. The combination, in a friction-clutch, of the arms, the band, and connecting mechanism, one of said arms being tight and the other loose upon the shaft, and the ends of said band being attached to said arms, re spectively, substantially as described.

2. The combination, in a friction-clutch, of the shaft, the arms respectivelyfast and loose upon said shaft, the band, and the pulley provided with the flange 0, said band encircling said flange and its ends being attached to said arms, respectively, substantially as described.

3. In a friction-clutch, the combination of the shaft, the sleeve upon said shaft, the barE, jointed to said sleeve, the links F G, the arm II. upon said shaft, and the block I, said links being jointed to said bar and arm, and said block being adj ustablc upon said arm, substantially as described.

4. In a friction-clutch, the combination of the shaft, the arms H K, the block I, and the link L, said arms being fitted to said shaft, said block being adjustable upon said arm 11, and said link being jointed to said block and said arm K, substantially as described.

5. I11 a friction-clutch, the combination of the shaft, the sleeve upon said shaft, the bar E, jointed to said sleeve, the links F G L, the arms II K, and the block I, said links F G being jointed to said bar E and arm II, said link L being jointed to said block and arm K, said arms being fitted to said shaft, and said block being adjustable upon said arm II, as described. I

lVitncss my hand this 11th day of Deecm ber, 1889.

I llLON R. HORTON.

Vitnesses:

(J. l). MOODY, MILTON F. WILLIAMs. 

